68450549523 has 4 divisors (see below), whose sum is σ = 91267399368. Its totient is φ = 45633699680.

The previous prime is 68450549507. The next prime is 68450549569. The reversal of 68450549523 is 32594505486.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68450549523 - 2⁴ = 68450549507 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68450539523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11408424918 + ... + 11408424923.

It is an arithmetic number, because the mean of its divisors is an integer number (22816849842).

Almost surely, 2^68450549523 is an apocalyptic number.

68450549523 is a deficient number, since it is larger than the sum of its proper divisors (22816849845).

68450549523 is a wasteful number, since it uses less digits than its factorization.

68450549523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22816849844.

The product of its (nonzero) digits is 5184000, while the sum is 51.

The spelling of 68450549523 in words is "sixty-eight billion, four hundred fifty million, five hundred forty-nine thousand, five hundred twenty-three".